MOTOR DRIVEN POWER STEERING CONTROLLER

摘要

PURPOSE:To improve the steering feeling by adding the differentiated current command of motor to be fed on the basis of steering detection output command to be produced through steering to the current command thus performing differential compensation. CONSTITUTION:In accordance to the torque signal to be produced from torque sensor 1 when steering, an optimal assisting force control current command is produced from a function generator 10 and corrected in vehicle speed correcting circuit 11 in accordance to the vehicle signal fed from vehicle speed sensor 4. The corrected current command is added/subtracted against the optimal recovery control current command to be fed from recovery control current command generating circuit 13 in accordance to a steering angle fed from a steering sensor 5. In accordance to the output from said circuit 12, a current command is produced from current command generating circuit 14 then added with differentiated current command obtained from differential compensation circuit 15 to produce a command signal for performing duty factor control of chopper 9 associated with D.C. motor 6.